U.S. Major Indices Open Higher; Memory Chip Stocks Surge as Micron and Sandisk Jump Over 17%
N.R. Finch
Memory chips led the US open, with Micron up 18% and SanDisk up 18%, driven by Micron's blowout earnings and a wave of analyst price-target raises; the Philadelphia Semiconductor Index jumped 5.3%, but Big Tech pulled back in tandem — capital is rotating out of large-cap software and into the hardware chain.
Why did memory chips suddenly surge across the board?
Micron jumped 18.21%, SanDisk 17.86%, Western Digital 8.40% — the entire memory-chip supply chain rallied.
The trigger: Micron's latest earnings far exceeded expectations, and multiple banks raised their price targets, creating a twin push of "earnings validation + valuation upgrade."
This means → the market is repricing the whole memory cycle: not just Micron, but its upstream and downstream suppliers too.
Among chip stocks, who gained the most — and who barely moved?
Qualcomm surged 9.05%, hitting over 11% pre-market — its biggest single-day gain since May 22. AMD rose 4.34%, Intel 5.88%, TSMC 2.11%.
By contrast, Nvidia gained just 0.20% and Broadcom only 0.99% — the two AI-chip leaders were nearly flat.
In plain terms = today's money chased "hardware-cycle recovery," not "AI compute." Legacy chip names like Qualcomm and Intel showed more upside elasticity.
Why did Big Tech fall on the same day?
Alphabet dropped 2.38%, Amazon 2.77%, Apple 2.72%, Meta 1.68%, Microsoft 1.48%, Adobe 1.94% — large-cap internet and software stocks pulled back broadly.
The Philadelphia Semiconductor Index soared 5.30%, yet these tech giants weakened in unison.
This reflects a classic sector rotation: capital moving from software and platform companies into hardware and chips — tech as a whole isn't weakening; money is shifting within the sector.
What signal does IBM's "sub-1 nm" announcement send?
IBM rose roughly 1% after unveiling the world's first sub-1-nanometer chip technology.
Sub-1 nm — a process node one step beyond today's most advanced chips — remains in the lab and is still far from mass production.
This means → the near-term stock impact is limited, but it sends a signal to the market: the chip-process race is still accelerating, and the pace of breakthroughs is not slowing down.
Content is for reference only, not financial advice.